Multineedle sewing-machine.



K. MAIER.

MULTINEEDLE SEWING MACHINE.

APPLICATION FILED DEC. 6. 1911.

Patented June 2, 1914 UNITED STATES PATENT OFFICE KARL MAIER, OF STUTTGART, GERMANY, ASSIGNOR TO THE FIRM UNION SPECIAL MASCHINENFAIBRIK G. M. B. H., OF STUTTGART, GERMANY.

MULTINEEDLE SEWING-MACHINE.

Specification of Letters Patent.

Application filed December 6, 1911.

. To all whom it may concern:

alt)

Be it known that I, KARL MAIER, a citizen of the German Empire, residing at Stuttgart, in the Kingdom of Wurttemberg, Empire of Germany, have invented certain new and useful Improvements in Multineedle Se\\-'ing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the ar to which it appertains 'to make and use the same.

In multi-needle sewing machines with a looper, the latter works in conjunction with the needles andtakes the loops of the needle thread with it on its return movement, so that they come into a somewhat inclined position. For this reason it has hitherto been necessary to arrange the needles so far apart. For this object a loop-holder is pro vided, which may be shaped like a comb and the projections of which pass between the needles and in this way regulate the position of the loops. The distance between the needles is thus no longer dependent on the inclined position of the loops of the thread, and it is possible to obtain rows of stitches withsmall intervals between them. The loop-holder is also suitably controlled by the oscillating operating member of the ordinary looper or gripper and it may be directly attached to one of these parts. The loopholder may also be displaced laterally with reference to the needles andalso vertically to the gripper and the needle plate.

The invention will now be more particularly described with reference to the accompanying drawings, in which a form of construction is shown by way of example.

Figure 1 is a front view of the stitchforming devices in question; and Fig. 2, an end view ofthe same; Figs. 3 and show diderent positions of the stitch-forming devices to those shown in Figs. 1 and 2; Fig. 5. illustrates in front view the action of the loopholder.

The stitch-forming devices consist, as usual, of needles a carrying threads 6 which remain behind in the form of loops, on the return of the needles. The ordinary looper c, which receives a reciprocatory movement from the driving gear of the machine by means of a push-rod (Z and is caused to have a rocking movement by means of the swinging frame It, then serves for locking the loops. New in order to prevent the loops of the needle threads being brought into too inclined a position by the looper c on its return movement, a loop-holder e is provided, which is formed, for instance, as a comb and the projections f of which pass between the adjacent loops of the needle thread (Fig. 5), so that these loops are held. The loopholder 0 is suitably operated from one of the oscillating parts of the mechanism for operating the looper, for instance, from its frame It, so that itis set in swinging motion with the latter and thus enters between the loops. It is also mounted on the shaft 9 of the frame h which is ,displaceably mounted in the machine frame. In order to allow of its adjustment relatively to the frame it, the loop-holder e is also vertically adjustable by means of a screw 11 and a slot on. the end of the shaft the screw 71 passing through an elongated slot 7c of the. loopholder 6. By turning the shaft a further adjustment 'atright angles to the needle movement may thus be obtained.

I declare that what I claim is 1. In a sewing machine having a plurality of spaced needles, and a looper cooperating therewith to form stitches, a movable loopholder having a plurality of projections adapted to extend between the needles to hold the needle loops'apart, and means for oscillating said loop-holder in a direction transverse to the direction of the movement of the looper.

2. In a sewing machine having a plurality of spaced needles, and a looper cooperating therewith to form stitches, a movable loopholder, having a plurality of projections adapted to extend between the needles to hold the needle loops apart, and means for oscillating said loop-holder in a direction transverse to the direction of the movement 

